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  2. Bulova - Wikipedia

    en.wikipedia.org/wiki/Bulova

    Bulova was founded and incorporated as the J. Bulova Company in 1875 by Bohemian immigrant Joseph Bulova. [3] It was reincorporated under the name Bulova Watch Company in 1923, became part of the Loews Corporation in 1979, [ 4 ] and was sold to Citizen at the end of 2007.

  3. Chronograph - Wikipedia

    en.wikipedia.org/wiki/Chronograph

    The term chronograph comes from the Greek χρονογράφος (khronográphos 'time recording'), from χρόνος (khrónos 'time') and γράφω (gráphō 'to write'). '). Early versions of the chronograph are the only ones that actually used any "writing": marking the dial with a small pen attached to the index so that the length of the pen mark would indicate how much time had

  4. Quartz clock - Wikipedia

    en.wikipedia.org/wiki/Quartz_clock

    Circuit board of an e block from a chronograph-wristwatch. The quartz crystal oscillator can be seen on right. The quartz crystal oscillator can be seen on right. Quartz clocks and quartz watches are timepieces that use an electronic oscillator regulated by a quartz crystal to keep time.

  5. Watch - Wikipedia

    en.wikipedia.org/wiki/Watch

    A chronograph is a watch with an added duration timer, often a stopwatch complication (as explained above), while a chronometer watch is a timepiece that has met an industry-standard test for performance under pre-defined conditions: a chronometer is a high quality mechanical or a thermo-compensated movement that has been tested and certified ...

  6. Omega Speedmaster - Wikipedia

    en.wikipedia.org/wiki/Omega_Speedmaster

    Omega cal. 321 movement. The Speedmaster was not originally designed for space exploration. Instead, it was introduced in 1957 as a sport and racing chronograph following on from the early chronographs of the 1920s and 1930s, including the Omega 28.9 chronograph, which was Omega's first small wrist chronograph, complementing Omega's position as the official timekeeper for the Olympic Games.

  7. Tachymeter (watch) - Wikipedia

    en.wikipedia.org/wiki/Tachymeter_(watch)

    Tachymeter scale on a Citizen watch bezel. A tachymeter (pronounced / t æ ˈ k ɪ m ə t ər /) is a scale sometimes inscribed around the rim of an analog watch with a chronograph.It can be used to conveniently compute the frequency in inverse-hours of an event of a known second-defined period, such as speed (distance over hours) based on travel time (distance over speed), or measure distance ...

  8. Mechanical watch - Wikipedia

    en.wikipedia.org/wiki/Mechanical_watch

    The hand-winding movement of a Russian watch. A mechanical watch is a watch that uses a clockwork mechanism to measure the passage of time, as opposed to quartz watches which function using the vibration modes of a piezoelectric quartz tuning fork, or radio watches, which are quartz watches synchronized to an atomic clock via radio waves.

  9. Wittnauer - Wikipedia

    en.wikipedia.org/wiki/Wittnauer

    Wittnauer is a watch and clock company, founded in New Rochelle, New York in 1885 by Swiss immigrant Albert Wittnauer, that is now a brand of the Bulova company, which is owned by Japanese conglomerate Citizen Watch Co.

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